Gabrielle Arsiaga/News-Sun Hobbs Police officers arrested three juveniles on Saturday and charged with robbing a smoke shop with what shopkeepers thought was a handgun, but turned out to be a BB gun. Two 15-year-old boys, were charged with robbery and accessory, second-degree felonies. A third, 15-year-old boy was charged with robbery, a second-degree felony. Around 9:25 p.m. Saturday, HPD officers …